Case 3

A 31 year old man comes to your office complaining of diarrhea and abdominal cramping for the past month. The diarrhea is watery, but occasionally contains mucus and blood. On examination, his temperature is 37 degrees, R 18, P 82, BP 120/80. There is mild abdominal tenderness, but no guarding or rigidity. The liver and spleen are not palpable. On further questioning, he admits that he is homosexual. His HIV antibody test is negative. Fecal leukocytes are seen on examination of the stool.

1. What type of diarrhea are we dealing with?  Answer

2. What is your differential for this form of diarrhea in this patient?  Answer

3.What pathogens could be responsible for the patient's diarrhea?   Answer

4. How would you establish the diagnosis in this patient? You will be given the results of your ordered tests.  Answer

5. Describe the life cycle and pathogenesis of this parasite.  Answer

6. Describe the epidemiology for this infection.  Answer

7. How is the parasite transmitted? How did this patient get the infection?  Answer

8. How does this parasite produce disease?   Answer

9. What pathologic changes are produced?   Answer

10. Describe the clinical manifestations of this infection.  Answer

11.What complications might occur?   Answer

12. How would you establish the diagnosis for each of the manifestation?  Answer 

13  How would you treat this patient?   Answer

14. How will you treat other common manifestations of this disease?  Answer

15. What control measures are available to prevent its transmission?  Answer